France, Sept. 10 -- Poland shot down Russian drones that entered its airspace during a widespread attack on neighbouring Ukraine on Wednesday, marking the first time a NATO member has fired weapons during the three-year conflict.

The incident forced airports to close, prompted Warsaw to invoke NATO consultations, and drew warnings from Ukraine that Russian President Vladimir Putin was "testing the West".

Prime Minister Donald Tusk said a huge number of drones had crossed into Polish territory. Four were likely destroyed, with the last one brought down at 6:45am local time.

Poland asked NATO to invoke Article 4 of the alliance treaty, which allows urgent consultations when a member feels its security is under threat.

"Aircraft have use...